I am getting Errors while JMS consuming in wso2esb

Question

I am using wso2esb4.7.0 and ActiveMQ5.8.0 http://docs.wso2.org/display/ESB470/ESB+as+a+JMS+Producer and http://docs.wso2.org/display/ESB470/ESB+as+a+JMS+Consumer according to the document i have done my messages are passing well to queue.Even storing also well .While conuming the messages in to the queue Wso2esb giving issues like formats

ERROR - JMSMessageReceiver Unknown error processing message
org.apache.axiom.om.OMException: com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected character '{' (code 123) in prolog; expected '<'
 at [row,col {unknown-source}]: [1,1]

why this happening is there any message format issue i am passing just sample json like

curl -v -H "Accept: application/json" -H "Content-Type:application/json" -H "ModifiedOn:0" -H "username:vikaash|21405735755158656" -H "password:gbin" -d '{"name":"youtility tech","mail":"[email protected]"}' http://youtility2-desktop:8282/services/JmsStore

how we can send response to client

http://stackoverflow.com/questions/18440789/how-to-give-a-response-to-client-using-wso2esb-jmsqueue

Answer 1

Reason for this is, if you haven't specifically configure JMS Proxy to accept messages in a particular message format, it will always treat messages are in the text/xml format.

So when you send the message in application/json format you will get this exception while building the message. So if you want to accept messages in json format from a JMS queue you have to define 'transport.jms.ContentType' parameter as follows in the proxy service configuration.

   <parameter name="transport.jms.ContentType">
        <rules>
            <jmsProperty>contentType</jmsProperty>
            <default>application/json</default>
        </rules>
    </parameter>

Following is a sample proxy configuration.

<proxy name="StockQuoteProxy" transports="jms">
    <target>
        <inSequence>
            <property action="set" name="OUT_ONLY" value="true"/>
        </inSequence>
        <endpoint>
            <address uri="http://localhost:9000/services/SimpleStockQuoteService"/>
        </endpoint>
        <outSequence>
            <send/>
        </outSequence>
    </target>
    <publishWSDL uri="file:repository/samples/resources/proxy/sample_proxy_1.wsdl"/>
    <parameter name="transport.jms.ContentType">
        <rules>
            <jmsProperty>contentType</jmsProperty>
            <default>application/json</default>
        </rules>
    </parameter>
</proxy>